D defs.my
Entry 1 sense Webster, 1913

Fronto-

· Fron·to- · IPA /fɹʌn.toʊ/
01 A combining form signifying relating to the forehead or the frontal bone; as, fronto-parietal, relating to the frontal and the parietal bon…
  1. 1.
    A combining form signifying relating to the forehead or the frontal bone; as, fronto-parietal, relating to the frontal and the parietal bones; fronto-nasal, etc.(Anat.)